html, body, #root {
  height: 100%;
  position: relative;
}

body {
  margin: 0;
  font-family: 'Source Han Sans CN', 'Helvetica', 'PingFang SC', 'Microsoft YaHei', '鎬濇簮瀹�', 'Arial', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body *{
  box-sizing: border-box;
}